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[/] [zipcpu/] [trunk/] [sw] - Rev 209

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209 8b bytes, + formal verification throughout + dcache dgisselq 1415d 13h /zipcpu/trunk/sw
206 Updated assembler, fixes several bugs, adds better bug detection and reporting (fixes some segfaults on bugs) dgisselq 2136d 01h /zipcpu/trunk/sw
203 Removed the (now unused) old GCC compiler, v5.3.0 dgisselq 2154d 20h /zipcpu/trunk/sw
202 Additional ZipCPU changes associated w 8b upgrade dgisselq 2154d 21h /zipcpu/trunk/sw
200 Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified.
dgisselq 2254d 04h /zipcpu/trunk/sw
192 Fixed a bug with constant alignment in the assembler. dgisselq 2280d 22h /zipcpu/trunk/sw
191 Updated toolchain, more information on the example debugger. dgisselq 2296d 01h /zipcpu/trunk/sw
188 Adjusted the opcodes to match the binutils port: added RTN instructions, and
allowed BREAK instructions to include an immediate--to be interpreted by the
debugger.
dgisselq 2329d 19h /zipcpu/trunk/sw
171 This fixes the problem whereby the ZipCPU didn't properly access more than
5 word-sized function parameters.
dgisselq 2332d 01h /zipcpu/trunk/sw
166 Bugfix version. This fixes a problem whereby function addresses with offsets
were not properly calculated, together with properly setting up pcrelative
offsets when using the move function together with a label.
dgisselq 2391d 00h /zipcpu/trunk/sw
165 Added a test to make certain that the arithmetic right shift was properly
propagating the high order bit. (The test works under verilator, but didn't
initially work in Xilinx -- thus a difference between the two.)
dgisselq 2391d 00h /zipcpu/trunk/sw
156 Fixed a compiler warning for an unused result. dgisselq 2422d 16h /zipcpu/trunk/sw
146 Fixes a problem where the assembler complained the compiler was trying to
move .org backwards. This is now fixed.
dgisselq 2455d 14h /zipcpu/trunk/sw
143 This section belatedly adjusts the zasm assembler so that it can handle
the LONG_MPY changes that have taken place. However, the test.S assembler
test script is still not properly testing the multiplies--at least it will
succeed on everything else.
dgisselq 2455d 15h /zipcpu/trunk/sw
142 Bug fix--fixes some problems with conditional execution, as well as removing
an unnecessary peephole optimization.
dgisselq 2456d 15h /zipcpu/trunk/sw
141 Fixes two bugs: one causing merged strings in the read only string section to
be referenced at the wrong address, and the second which caused the assembler
to fail at SYMBOL-OFFSET references.
dgisselq 2456d 15h /zipcpu/trunk/sw
138 This updates the CPU multiply instruction into a set of three instructions.
MPY is a 32x32-bit multiply instruction, returning the low 32-bit result,
MPYUHI returns the upper 32-bits assuming the result was unsigned and MPYSHI
returns the upper 32-bits assuming the result was signed.
dgisselq 2462d 01h /zipcpu/trunk/sw
137 This should (again) fix the bug of trying to build optest.cpp. dgisselq 2475d 19h /zipcpu/trunk/sw
136 Oops --- missed a couple HOST_WIDE_INT values in a printf. This casts them
to (long), so that we can work on both PC's and ARMs.
dgisselq 2475d 19h /zipcpu/trunk/sw
135 Replaced all occurrences of INTVAL(...) on printf lines with (long)INTVAL(...).
This should fix the problems zip-gcc was having while running on the ARM.
dgisselq 2475d 19h /zipcpu/trunk/sw
127 Lots of changes and bugfixes. The disassembler produces more readable output.
The assembler and linker will no longer automatically use LDIHI--in preparation
for switching to LONG_MPY. LDIHI/LDILO pairs have been changed to BREV/LDILO
pairs. Within the compiler, conditional moves have been rebuilt. They're not
perfect yet, but they are better. Lots of peephole optimizations, etc.
dgisselq 2476d 16h /zipcpu/trunk/sw
126 Lots of changes preparing the assembly for an instruction set change. While
implemented, they are still commented out via #ifdef LONG_MPY. By defining
LONG_MPY, this new change set will take place.
dgisselq 2476d 16h /zipcpu/trunk/sw
125 This patch contains minor updates. Two are important to mention: 1) It turns
the compare optimizations back on within the zip.md file, and 2) it fixes an
internal compiler fault that was causing the compiler to such up all of my
memory in an infinite recursion.
dgisselq 2485d 00h /zipcpu/trunk/sw
124 Lots of changes, lots of bugfixes--both to the compiler as well as to the
assembler. (Ex: the assembler will now properly execute a LDI _sym+5,R0).
Many compiler optimizations have been turned off, however. They will probably
be turned back on in the near future--once I get this version proven without
them.
dgisselq 2486d 14h /zipcpu/trunk/sw
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2486d 14h /zipcpu/trunk/sw
122 This represents a major rewrite of the machine definition file, gcc/config/zip/
zip.md. In particular, the architecture has been changed from a "cc0"
architecture to one with a specific CC_REG and CCmode. Instructions in the
machine definition file must now explicitly set this register with their
results. The result is better condition code handling, better usage of the
conditional execution modes of certain instructions, and even some decent
optimizations.
dgisselq 2491d 18h /zipcpu/trunk/sw
121 Fixed the bug whereby BGE instructions dissassembled as BGT instructions and
vice versa. Loads and stores of absolute addresses now show those addresses
in ($<>). The assembler also accepts integer offsets to symbols, although
it isn't clear that it does the "right" thing with them yet.
dgisselq 2491d 18h /zipcpu/trunk/sw
120 Should've regression tested that last build. This one fixes what that last
fix broke: Registers with offsets (i.e. operand-B) now work (again).
dgisselq 2495d 13h /zipcpu/trunk/sw
119 Fixed some limits bugs. Now LDI.Z 1 produces LDIHI.Z 0, LDOLO.Z 1 as desired
instead of the erroneous BREV.Z 0. Likewise, loading 0x80000000 no longer
produces a clear instruction, but actually loads the value of interest.
dgisselq 2495d 14h /zipcpu/trunk/sw
117 Bug fixes: This adds the zip_ucc() instruction as a builtin, fixes the zip_cc()
builtin (both are now unspec_volatile) together with fixing the *_context(int*)
builtins so that they use five registers, never four. Further, this fixes the
negative stack space offset bug. Many of the GCC files now have Zip debugging
hooks within them as well, to simplify further debugging of the compiler.
dgisselq 2496d 00h /zipcpu/trunk/sw

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